What is key1 and key2 wires for?
The Key 1, Key 2, and Key GND wires will be used to interface steering wheel controls if your vehicle came equipped. Most newer vehicles will also need the Axxess ASWC-1 to translate the steering wheel controls to this stereo.
What color is the ignition wire for stereo?
Turn the key back to the On/Acc. and run positions and voltage should come back. This is the correct wire for Ignition/Accessory (red wire).